金川二礦區(qū)地下采場(chǎng)和采準(zhǔn)工程力學(xué)穩(wěn)定性研究.pdf

1、蘭州大學(xué)博士學(xué)位論文金川二礦區(qū)地下采場(chǎng)和采準(zhǔn)工程力學(xué)穩(wěn)定性研究姓名：王麗娟申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：工學(xué)固體力學(xué)指導(dǎo)教師：苗天德慕青松20080501蘭州大學(xué)博士學(xué)位論文AbstractJinchuannickelminewithenormousmineraldepositisstrategicimportantforthenationaleconomyInrecentyears，研tllthedouble—levelminingatde

2、pth，horizontaljambandverticaljambhadbeenformedTheundergroundpressureemergenceisveryobvious，driftswerestronglydeformed，especiallythemoreremarkabledeformationonthe1178mdriftSoitisnecessaryandurgenttostudythemechanicsproble

3、msofundergroundprojectsintheNo2MiningAreaofJinchuanandevaluatethestabilityofthemThispaperreliesonthetechnologicalprojectoftheJinchuanCompany’’Effectsof1150mMacroHorizontalJambMiningontheRedistributionofStressFieldandtheE

4、valuationofDriftStabilityintheNo2MiningAreaofJinchuanNickelMine”Basedontheinvestigationofstressfielddatageologicconformation，thedistributionofmainlyfault，thecharacteristicofrockmechanics，theminingprocessandthelocationsof

5、projects，etc，usingthetheoryofelasticplasticmechanicsandrockmechanics，bymeansoffiniteelementnumericalsimulationwestudythestressstateinwallrock，horizontaljambandverticaljamb，theinteractionbetweenthem，andevaluatethestabilit

6、yofdriRsinhangingwallrockThemainconclusionsdescribedfollowingalreadyhadbeenadopted：1ThetridimensionalfiniteelementmodeloftheNo2miningareawerebuiltforthefnsttime，SOweCallstimulatetheminingprocessyearbyyear2Bymeansofthefin

7、iteelementprogramANSYSandcombiningtheprocedurecodescompiledbyourselves，thecomplex3Dinitialstressfieldwerepreciselystimulatedandthe3Dstressgradientingravitydirectionwerepreserved3Evaluatingthestabilityofthehorizontaljamba

8、ndverticaljambonthebaseoftridimensionalnumericalsimulationcombiningtheprincipleofelastic—plasticmechanics，drawingtheconclusionsthatthetwojambshavebeeninplasticstatementin2004，andtheyCanbeminedinappropriatetime4Stimulatin